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    ChemWhiz08's Avatar
    ChemWhiz08 Posts: 2, Reputation: 1
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    #1

    May 2, 2007, 05:13 PM
    How to solve Thermochemical equations.
    Please help. My teacher says I'm supposed to use stoichiometry... but I am not sure how.


    Given the following thermochemical equation:
    2ZnS+3O2=>2ZnO+2SO2 q= 3360KJ

    If a reaction has a heat change of 884KJ, what quantity of SO2 in grams is produced?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #2

    May 2, 2007, 10:24 PM
    Well you can see that 3360KJ is equal to 2 moles of SO2 being produced... so how many moles are produced when 884KJ is released... how many grams is this?

    I assume this is how to do it, but I'm just guessing really :)
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